1. Black Ceramic Chronograph 

• Model Type: Rad_o Chronometer Chronograph

• Material: High-tech black ceramic case and bracelet (signature Rad_o material).

• Dial: Matte black with champagne-gold subdials.

• Features:

  • Three chronograph subdials (60 seconds, 30 minutes, 24-hour format).

  • Gold-tone hands and hour markers.

  • Date window at 4 o'clock.

  • Text on dial: “RAD_O CHRONOMETER OFFICIALLY CERTIFIED 100M”

• Style: Sleek, modern, and sporty with luxury appeal.

2. Silver Stainless Steel Chronograph  

• Material: Polished stainless steel case and bracelet.

• Dial: Black with silver-tone subdials and markers.

• Features:

  • Same chronograph layout as above.

  • Contrasting subdials for high legibility.

  • Date window at 4 o’clock.

  • Pushers and crown match the silver tone.

• Style: Classic and professional with a sporty edge.

3. Gold Tone Chronograph 

• Material: Gold-plated stainless steel or PVD-coated finish.

• Dial: Black with gold subdials.

• Features:

  • Chronograph function and date display.

  • Golden pushers and crown, maintaining full uniformity.

  • Dial markings and text identical to other two: “RAD_O CHRONOMETER OFFICIALLY CERTIFIED 100M”

• Style: Luxurious and bold—ideal for formal or statement wear.

Common Characteristics Across All Three:

• Certified Chronometer: These watches are COSC-certified, meaning they meet high standards of timekeeping precision.

• 100M Water Resistance: Suitable for swimming and everyday use, but not for deep diving.

• Date Window: Positioned at 4 o’clock.

• Screw-down Crown & Pushers: Likely included to ensure water resistance.

• Design Line: Most likely part of the Rad_o Diastar or HyperChrome Chronograph series (need exact reference to confirm).